Environmental Rules in Auburn, WA (2026)
4 verified environmental rules for Auburn, Washington, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Auburn follows the Department of Ecology Western Washington Stormwater Manual through ACC Title 13 surface water code, requiring runoff control for new and redeveloped sites in the Green River watershed.
Stormwater Rules in Auburn
Heavy RestrictionsWA Dept. of Ecology Stormwater Management Manuals
Stormwater manuals Our stormwater manuals provide stormwater permit implementation and management guidance. Contact your municipality or permit administrator to determine which manual you need and for questions regarding implementation of stormwater management guidance. Ecology's Stormwater Management Manuals (SWMMs) The dropdowns below provide access to past and present SWMMs. Ecology's S...
Erosion Control
Auburn requires a Construction Stormwater Pollution Prevention Plan for any project that disturbs land, spelling out clearing limits, sediment controls and slope stabilization. The plan must follow the city's Surface Water Management Manual under ACC 13.48.225, and the city engineer can order added best-management practices if a site keeps discharging sediment.
Auburn Erosion & Sediment Control Rules
Some RestrictionsACC 13.48.225(D)(2)
2. Preparation of a Construction Storm Water Pollution Prevention Plan for Erosion and Sediment Control. This plan shall be designed to comply with the requirements and purposes of the SWMM, this section, any other applicable sections of ACC Titles 15, 16, 17 and 18 and any departmental guidelines promulgated by the city engineer. The plan shall be designed, submitted and implemented to address...
Flood Zones
Auburn regulates construction in FEMA-mapped Zone AE floodplains along the Green River and White River under ACC Title 15.68 and the Critical Areas Ordinance, requiring elevation and flood vents.
Flood Zone Rules in Auburn
Heavy RestrictionsFEMA Flood Map Service Center
FEMA Flood Map Service Center: Welcome! Looking for a Flood Map? Enter an address, a place, or longitude/latitude coordinates: Looking for more than just a current flood map? Visit Search All Products to access the full range of flood risk products for your community. About Flood Map Service Center The FEMA Flood Map Service Center (MSC) is the official public source for flood hazard informatio...
Flood Elevation Requirements
Auburn requires new construction in the Special Flood Hazard Area to be built to a flood protection elevation one foot above the base flood elevation. The floodplain administrator, the city's director of community development, enforces the standard under ACC 15.68.130 before issuing a floodplain development permit.
Auburn Base Flood Elevation Rules
Some RestrictionsACC 15.68.130
A. The base flood elevation for the SFHAs incorporated in ACC 15.68.120(A) shall be utilized. B. The flood protection elevation (FPE) shall be the base flood elevation plus one foot. C. The floodway shall be as delineated on the Flood Insurance Rate Map. D. Where base flood elevation and floodway data have not been provided in Special Flood Hazard Areas, the floodplain administrator or designee...
Looking for King County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Auburn city rules.
Environmental Rules in King County →